afbBiagabby afbBiagabby

14-12-2016
Mathematics

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Question 1: Describe how you would use the distributive property to simplify (39 x 5). Question 2: Your best friend tells you the solution of 375 = x - 28 is 347. Explain your best friend's error.

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nobillionaireNobley nobillionaireNobley

17-12-2016

39 x 5 = (30 x 5) + (9 x 5) = 150 + 45 = 195

He did not change the sign of operation when 28 crossed the equals sign.

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